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Agata [3.3K]
3 years ago
9

I have an hour left to finish this exam plz help me qwq"

Mathematics
1 answer:
sergejj [24]3 years ago
6 0

Answer:

B. 10    E. 20   C. 60

Step-by-step explanation:

s = 2f

t = 2(f + s)

(15 + 15 + 30 + f + s + t)/6 = 25       This equation and the equations above show how the variables relate to each other

f = 10               The first number is 10

s = 2(10)=20   The second number is 20

t = 2(10 + 20) = 60   The third number is 60

If these answers are correct, please make me Brainliest!

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Solve to find the value for x in the linear equation: 3(−4x + 5) = 12.
gtnhenbr [62]

Answer:

x=4

Step-by-step explanation:

3(-4x+5)=12

3(-4x) + 3(5)=12

-12x+15=12

<u> -15</u><u>=-15</u>

-12x=-3

-x = -4

Since your x is negative change the signs

8 0
3 years ago
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What is -0.75 - 0.4 simplified
anzhelika [568]

Answer:

-1.15

Step-by-step explanation:

Subtract  0.4  from  − 0.75 .

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Martha has $180. She needs a total of $2,000 to start investing in stocks. She earns $60 per day working, of which she saves $50
DIA [1.3K]
So she earns $60 per day working, but only saves $50. To solve this equation you have to multiply $50 to each day she works. If the total has to be exactly $2,000 then you must multiply 50 x 36.4 and that equals $2,000.
Your answer should be 36.4 days.
4 0
3 years ago
How many simple interest accrues on a $5,000 loan at 8% for 18 months?
katen-ka-za [31]

Answer:

$600

Step-by-step explanation:

A = P(1 + rt)

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A= 5,000(1+ 0.08x1.5) = $5600

5 0
3 years ago
Find the area of the shaded triangle
Ivanshal [37]

Answer:

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Step-by-step explanation:

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The area of any triangle if equal to 0.5 * width * height, so:

0.5 * 6 * 6 = 3 * 6 = 18 square units.

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2 years ago
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